Associations between ambient fine particulate matter and child respiratory infection: the role of particulate matter source composition in Dhaka, Bangladesh

This study evaluates associations between the short-term variation in ambient PM, g and the incidence of pneumonia and upper respiratory infections among children in Dhaka, Bangladesh. The authors also perform an exploratory analysis of the PMO g source composition that is most strongly associated w...

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Bibliographic Details
Published inTERI information digest on energy and environment Vol. 20; no. 4; pp. 501 - 502
Main Authors Sherris, A R, Begum, B A, Baiocchi, M, Goswami, D
Format Journal Article
LanguageEnglish
Published New Delhi The Energy and Resources Institute 01.12.2021
Subjects
Children
Composition
Construction materials
Infections
Kilns
Matching
Particulate emissions
Particulate matter
Pneumonia
Respiratory tract infection
Statistical analysis
Bangladesh
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Summary:This study evaluates associations between the short-term variation in ambient PM, g and the incidence of pneumonia and upper respiratory infections among children in Dhaka, Bangladesh. The authors also perform an exploratory analysis of the PMO g source composition that is most strongly associated with health endpoints. They leveraged data from health surveillance of children less than 5 years of age in Kamalapur, Bangladesh, including daily physicianconfirmed diagnoses of pneumonia and upper respiratory infection. Twice-weekly sourceapportioned ambient PM, g measurements were obtained for the same period, and Poisson regression adjusted for time-varying covariates was used to estimate lagged associations between ambient PM, and respiratory infection. The authors use complementary matching and stratification approaches to evaluate whether these associations vary across PM2.5 source composition. Total PM2.5 mass was associated with a modest increase in incidence of pneumonia, with a peak effect size two days after exposure (rate ratio = 1.032; 95% confidence interval = 1.008-1.056). The authors did not find a significant association between PM2.5 and upper respiratory infection. Stratified and matching analyses suggested this association was stronger among days when ambient PM2.5 had a higher mass percent associated with brick kiln and fugitive lead emissions. This study suggests that elevated ambient PM2.5 contributes to the increased incidence of child pneumonia in urban Dhaka and that this relationship varies among days with different source composition of PM2.5. (4 Figures, 3 Tables, 68 References)
ISSN:0972-6721
1875-9297